We have been crazy busy here! We have been working around the clock trying to get the suburban ready for our trip! The cummins has been fitted in. The 6spd looks to fit well. Now we are tearing out the IFS and replacing it with a dana 60! Its a 79 F350 High pinion 60! Should work well! Pics and updates to www.Offroad-Adventure-Travel.com soon to follow!